He says it’s sad the baby has been left in such circumstances and has asked the public for help to find the baby’s mother.

“You know we have some concerns for the mum and really the primary concern at this time and finding her and just making sure she’s OK. Somebody must know who mum is,” Superintendent Rowan tells ABC News.

“It would be very rare that someone was able to have a child on their own… so whether there’s been some level of assistance or something with mum to have the child.

“Quite clearly there must be some sort of circumstances that we don’t know about that has meant that mum has had to make the decision to leave the child with these people.”

The discovery prompted Yvonne Wilson, chief executive of local support service Linking Communities Network in Griffith, to urge people to show compassion to the young mum.

“She probably felt she had no alternative,” Ms Wilson says. “I can only feel for that mother who felt it necessary to do that.

“It (the baby) wasn’t just abandoned to its own devices and I think that’s what we have to remember.”

Superintendent Rowan says police are confident the baby was not born at one of the local hospitals.

“That’s not to say he wasn’t born at another hospital, somewhere else,” he says.

Anyone with information about the baby or his mother is urged to contact Crime Stoppers.